Remove the developer newsletter

Signed-off-by: Stasia Michalska <[email protected]>

Author: hellcp

source/_includes/blog/newsletter.html

@@ -76,6 +76,3 @@ <h3>Authors</h3>
     </div>
   </div>
 </div>
-<div id="modal-newsletter" class="hidden">
-  {% include blog/newsletter.html %}
-</div>